Joptionpane input dialog boxes open

A Dialog window is an independent subwindow meant to carry temporary notice apart from the main Swing Application Window. Most Dialogs present an error message or warning joptionpane input dialog boxes open a user, but Dialogs can present images, directory trees, or just about anything compatible with the main Swing Application that manages them.For convenience, several Swing component classes can directly instantiate and display dialogs.

To create simple, standard dialogs, you use theJOptionPane class. The ProgressMonitor class can knput up a dialog that shows the progress of an operation. Two other classes, JColorChooser and JFileChooser, also supply standard dialogs. To bring up a print dialog, dislog can use thePrinting API. To create a custom dialog, use theJDialog class directly.The code for simple dialogs can be minimal.

For example, here is an informational dialog:Here is the code that creates and shows it. Write a program that uses input dialog boxes to read three test marks, each out of 100. Yes.